TPT July 2017

T E CHNOLOG Y

T E CHNOLOG Y

Milling and bevelling of stainless steel SEVERAL series of Linsinger PFM plate edge milling machines and RFM pipe end bevelling machines – designed exclusively for stainless steel – are currently operating successfully under tough conditions.

of welding seams on the two long sides of stainless steel plates. The machine has a vertical plate waviness tracking function for a constant bevel profile. This allows the whole milling profile to be milled in a single working pass on both long sides simultaneously, with high precision. This is important for perfect welding profiles, which should ideally be prepared in one pass. The cutter head should only be replaced when changing to a different profile – a function that is also available fully automated. Another advantage of Linsinger machines is their flexibility. All cutting parameters are digitally adjustable to the different types of stainless steel. As the machine measures each plate separately, even the smallest batch sizes can be produced efficiently. Linsinger has also developed specific, multi-layer coated and particularly resistant carbide inserts with special cutting geometries for a wide range of stainless steels. There is high demand for customis- able solutions in the pipe industry.

Underlining this growing trend, additional newly ordered machines are now being manufactured in Linsinger’s factory in Austria ready for delivery. Combined orders for sets of PFM plate edge milling machines and RFM pipe end bevelling machines for stainless steel tubes are proving especially popular, according to the company. Stainless steel requires specially designed cutting tools to avoid clogging. The widely varying chemical compositions and mechanical properties of stainless steel have radically differing cutting parameters compared to carbon steels. The maximum processing speed is correspondingly lower with stainless steel. Linsinger PFM plate edge milling machines ensure efficient preparation

Edge profiles milled by Linsinger PFM

Linsinger PFM stainless steel edge miller

Pipe ends bevelled by Linsinger RFM

For example, seam preparation for longitudinal pipe welding and pipe end chamfering both demand highest standards of precision, speed and productivity. The Linsinger RFM pipe end bevelling machine enables simultaneous cham- fering of both pipe ends by a single op- erator. The chamfered pipe surpasses, among others, API and ASME specifications. The moveable bevelling units chamfer a range of pipe lengths, and the integral profile copying system provides consistent chamfer geometries, even with pipe deformations. Linsinger Maschinenbau GmbH – Austria Fax: +43 7613 8840 951 Email: maschinenbau@linsinger.com Website: www.linsinger.com

32

www.read-tpt.com

JULY 2017